Abstract
Salinity is a major environmental constraint to crop productivity throughout the arid and semi arid regions of the world. The development of strategies to ameliorate deleterious effects of salt stress on plants has received considerable attention. Salicylic acid (SA) has been shown as an important signal molecule for modulating plant responses to environmental stress. In addition to facilitating the growth of plant, SA has been shown to play a role in mitigating the deleterious effects of some environmental stresses. Therefore, an experiment was conducted to investigate the impact of exogenous salicylic acid (0.01 mM) on some physiological parameters in tomato (Solanum lycopersicum, cv Marmande) grown under salinity stress (NaCl 100 mM). Dry yield of the plants decreased significantly with exposure to NaCl. Exogenous application of SA (0.01 mM), increased dry weight both in saline and non-saline conditions. In saline conditions, with the applied SA, dry yield increased almost up to the yield obtained from non-saline conditions. Salt stress increased membrane permeability of leaves. Exogenously applied SA decreased the membrane deterioration. NaCl reduced photosynthetic pigments contents. Whereas, the addition of SA induced an increase of these contents. Under salinity stress, the amounts of Na, Cl and Na/K ratio severely increased and the amount of K, Ca and Mg decreased. Addition of SA in the culture medium inhibited Na+ and Cl- accumulation, but stimulated K+, Ca2+ and Mg2+ contents of stressed plants. These results suggest that SA could be used as a potential growth regulator to improve plant resistance to salinity stress.
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Claims 12
Claim · model-written summary
NaCl significantly decreased plant dry yield.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- NaCle0
- Outcome
- Dry yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry yield of the plants decreased significantly with exposure to NaCl.”
t0“tomato”
Claim · model-written summary
Salicylic acid increased dry weight under saline and non-saline conditions.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SA (0.01 mM)e0
- Outcome
- dry weighte0
- Direction
- increasede0
- Qualifier
- both in saline and non-saline conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of SA (0.01 mM), increased dry weight both in saline and non-saline conditions.”
t0“tomato”
Claim · model-written summary
Under salinity, salicylic acid raised dry yield almost to the yield of non-saline plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- dry yielde0
- Direction
- increasede0
- Qualifier
- almost up to the yield obtained from non-saline conditionse0
- Comparator
- non-saline conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In saline conditions, with the applied SA, dry yield increased almost up to the yield obtained from non-saline conditions.”
t0“tomato”
Claim · model-written summary
Salt stress increased leaf membrane permeability.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- Salt stresse0
- Outcome
- membrane permeabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress increased membrane permeability of leaves.”
t0“tomato”
Claim · model-written summary
Exogenous salicylic acid decreased membrane deterioration.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- membrane deterioratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenously applied SA decreased the membrane deterioration.”
t0“tomato”
Claim · model-written summary
NaCl reduced photosynthetic pigment contents.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- NaCle0
- Outcome
- photosynthetic pigments contentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl reduced photosynthetic pigments contents.”
t0“tomato”
Claim · model-written summary
Salicylic acid increased photosynthetic pigment contents.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- photosynthetic pigments contentse1
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of SA induced an increase of these contents.”
e1“NaCl reduced photosynthetic pigments contents.”
t0“tomato”
Claim · model-written summary
Salinity increased Na, Cl and Na/K ratio.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- salinity stresse0
- Outcome
- amounts of Na, Cl and Na/K ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under salinity stress, the amounts of Na, Cl and Na/K ratio severely increased”
t0“tomato”
Claim · model-written summary
Salinity decreased K, Ca and Mg amounts.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- salinity stresse1
- Outcome
- amount of K, Ca and Mge0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of K, Ca and Mg decreased.”
e1“Under salinity stress, the amounts of Na, Cl and Na/K ratio severely increased”
t0“tomato”
Claim · model-written summary
Salicylic acid inhibited Na+ and Cl- accumulation in stressed plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- Na+ and Cl- accumulatione0
- Direction
- inhibitede0
- Qualifier
- stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of SA in the culture medium inhibited Na+ and Cl- accumulation, but stimulated K+, Ca2+ and Mg2+ contents of stressed plants.”
t0“tomato”
Claim · model-written summary
Salicylic acid stimulated K+, Ca2+ and Mg2+ contents in stressed plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- K+, Ca2+ and Mg2+ contentse0
- Direction
- stimulatede0
- Qualifier
- stressed plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of SA in the culture medium inhibited Na+ and Cl- accumulation, but stimulated K+, Ca2+ and Mg2+ contents of stressed plants.”
t0“tomato”
Claim · model-written summary
The authors suggest SA as a potential growth regulator for improving salinity resistance.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- improve plant resistance to salinity stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA could be used as a potential growth regulator to improve plant resistance to salinity stress.”
t0“tomato”
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See all 66 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.